A Personal Use Program for Calculation of Aviation Route Doses
نویسندگان
چکیده
An Excel VBA program to calculate aviation route doses is developed for personal use by the general public. This program named as “JISCARD EX” runs on a personal computer installed with the Microsoft Excel 2003/2007. The JISCARD EX calculates instantaneously cut-off rigidities (Rc) and cosmic radiation dose rates at passing route points according to flight log data (latitude, longitude and altitude as a function of time). The Rc values for the Earth’s magnetosphere are calculated with the MAGNETOCOSMICS code developed at the University of Bern. Solar activity represented as a force field potential (FFP) is evaluated from the observed trend of selected neutron monitors at high latitude. Future FFP values up to December 2008 are predicted from recently observed fluctuation of sunspot numbers. Cosmic radiation dose rates in the atmosphere are calculated using a PHITS-based analytical radiation model in the atmosphere (PARMA) developed in Japan. Calculated results are automatically summarized in a report of another Excel worksheet containing airport names, flying time, route dose and time plots of altitude, Rc and effective dose rate. This program will be open to the public through a web site of the National Institute of Radiological Sciences.
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تاریخ انتشار 2008